Improvement in boring-machines



Among BORING-MACHINE. v No.182,463, Patented Sept.1 9,l87 6 7762 eases.x: In M72607:

r, PETERS PHOTO-LITNOGRAFHER, WASHKNGTON, D C.

MIED

ATENT ARGHIBALD MOORE, or LOWELL, MASSACHUSETTS, ASSIGNOR To SAMUEL a tE. sror'r, or SAME PLACE. t g

IMPROVEMENT IN'BORING-MACHINES.

Specification forming'part of Letters Patent Ida-182M163; datedSeptember 19, 1876; application filed i May 1, 1876. I 1

To all whom it may concern.-

Be it known that I, ARCHIBALD MOORE, of

improvement is fully set forth in the following.

specification, reference being had to the accompanying drawings.

My invention relates to the means of operating and adjusting thehead-stock, drills, tailstock, and faceplate of a machine for drillingwooden lags for cylinders; and consists in the improvements hereinafterdescribed.

Figure l is a side elevation, and Fig. 2 a plan, of my machine.

Upon a metallic head, A, is dovetailed the head-stock B. This head-stockis rectangular, and has dovetailed onto it the separate headstocks ordrill-arbor bearings O G G O' 0, which support the drill-arborsD D D DD. The drill-arbors are revolved by quarter-turn belts, which run from awide pulley above them around the flanged pulleys E E E E 13, secured onsaid arbors. Said drill-arbors have each an annular groove, F F F F F,at their outer ends, into which are laid the parallel bars G G, securedtogether at their ends. Rack-bars H H running through holes in the outerdrill-bearings D D, are also grooved to receive the bars G G.

The rod I, running from end to end of the head-stock B, has splined toit two pinions, K K, which take into the bars H H. By turning the leverL, attached to the rod I, the drill-arbors are simultaneously carried toor from the work. The distances of the drillarbors from each other areregulated by the screws J J J" J J. The head-stock. is moved toward orfrom the tail-stock by the screw to.

The tail-stock is also dovetailed onto the bed A, and consists in abase, upon which are two uprights, slotted vertically, M M. In the slotsin said uprights are vertically-adjustable boxes N N, (raised or loweredby the screws 0 0,) in which swings the yoke P. The yoke P sustains agraduated arm, Q, to which is pivoted the head R. The head R is keptfrom turning by the set-screws T T. p

A plate, U, is dovetailed over the flat part of the headlt, so thattheformer may slide vertically-on the latter when moved by a screw, V,which. runs through a nut on the head R and a post on said plate U. Aface-plate, W, is so dovetailed onto the plate U that it may be movedsidewise by a nut on the plate U- and a screw, X, attached to saidface-plate by suitable bearings.

On the end of the screw X is a circular ratchet, Y, operated by a pawl,Z, on the lever a, the amount of motion of said lever being determinedby the adjustable stops b b on the stop-plate 0. These stops are securedby nuts on the under side of the stop-plate.

The head R and face-plate W on the arm Q may be brought nearer thetail-stock by the screw d, which runs in a nut in the yoke P, and issupported by the bearing 6 on said arm. Angular motion is imparted tosaid arm by the tangent screw 1", the head of which is secured to aswivel, g, in the carrier h. From the carrier the screw passes throughanother swivel, 41, between the uprights M M. A circular ratchet issplined to the screw f, and a lever, l, and pawl m serve to rotate thescrew. A stop-plate, n, attached to the swivel, and stops 0 0 aresimilar to those on the face-plate W, and serve a similar purpose. Thetailstock is moved toward or from the head-stock by the screw 1).

It will be seen from the above description that the adjustability of theface-plate W on the center enables holes to be drilled at any bevel-thatis, at any angle to a tangent of the cylinder formed by the lags; thatsaid face-plate, by means of the graduated arm Q,

may be set at a distance from the center equal to the radius ofcurvature on the face of the lag; that the face-plate, by means of thescrew X and ratchet Y, may be so adjusted endwise (or sidewise) as todrill the'holes which form a single row; and that the amount of thisendwise adjustment may be determined by the position of the adjustablestops b b; that the vertically-adjustable centers N N of the radiusenable the lag to be so placed that, whatever the bevel, the drills willbe in the same horizontal plane with the radius; that the length of theradius, or, in other words, the distance of the face-plate from thecenter, may

be determined by the screw d, working through the yoke P; that the anglewhich said radius has with the bed A may be varied by the tangent screwf; that the dri1l-arbor bearings D D may be set at different distancesfrom each other by the screws J J; that the parallel bars G G, moved bythe racks H H and pinions, enable all the drills at once to enter orleave the work.

I claim as my invention- 1. The face-plate W, adjustable on the center8, in combination with the drillarbors D D, as and for the purposedescribed.

2. The face-plate W, 'in combination with the drill-arbors D D and thegraduated arm Q, as and for the purpose described.

3. The face-plate W, in combination with the drill-arbors D D, the screwX, and ratchet Y, as and for the purpose described.

4. The face-plate W, in combination with thedrill-arbors D D, the screwX, ratchet Y, ,and stops. b b, as and for the purpose described.

5. The radius Q, provided with verticallyadjustable centers N N, incombination with the face-plate W, as and for the purpose described,

6. The radius Q, provided with the screw d, in combination with theswinging yoke 1, as and for the purpose described.

7. The radius Q, in combination with the carrier h, swiveled beam 1',and tangent screw f, as and for the purpose described.

8. The parallel bars G G, in combination with the rack-bars H H, pinionsK K, and drill-arbors D D D, having the annular grooves FF F, allconstructed and arranged as herein described, as and for the purposedescribed.

AROHIBALD MOORE.

Witnesses: I

ALBERT M. MOORE, SAMUEL B. WYMAN.

